Moving Bed Biofilm Reactor (MBBR) technology

Moving Bed Biofilm Reactor (MBBR) processes improve reliability, simplify operation, and require less space than traditional wastewater treatment systems.

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MBBR technology employs thousands of polyethylene biofilm carriers operating in mixed motion within an aerated wastewater treatment basin. Each individual biocarrier increases productivity through providing protected surface area to support the growth of heterotrophic and autotrophic bacteria within its cells. It is this high-density population of bacteria that achieves high-rate biodegradation within the system, while also offering process reliability and ease of operation.

This technology provides cost-effective treatment with minimal maintenance since MBBR processes self-maintain an optimum level of productive biofilm. Additionally, the biofilm attached to the mobile biocarriers within the system automatically responds to load fluctuations.

Process Benefits

Compact Design

A fraction of the size of conventional systems


Capacity can be easily upgraded by simply increasing the fill fraction of biofilm carriers

Single Pass Process

No return activated sludge stream required

Load Responsive

Actively sloughed biofilm automatically responds to load fluctuations

Minimal Maintenance

No F/M ratios or MLSS levels to maintain

MBBR processes are an excellent solution for common wastewater applications including:

Moving Bed Biofilm Reactor systems deliver a flexible, cost-effective, and easy-to-operate means to address current wastewater requirements and the expandability to meet future loads or more stringent discharge requirements within a compact design.

More Information

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Biological Processes


Examples of media

Patent & Patents Pending

AC 450 biocarrier for use in bioreactor
AC 450
Protected Surface Area 402 m2/m3

AC 515 biocarrier for use in bioreactor
AC 515
Protected Surface Area 485 m2/m3

AC 920 biocarrier for use in bioreactor
AC 920
Protected Surface Area 680 m2/m3
Patent Pending


ActiveCell biocarrier shown in mixing process within bioreactor
Media in reactor with biofilm growth
Moving Bed Biofilm Reactor ActiveCell biocarrier shown magnified
ActiveCellTM media under magnification

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+1 713 647 6667

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